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RMTLAND - Remoteland |
In the Republic of Remoteland, the people celebrate their independence day every year. However, as it was a long long time ago, nobody can remember when it was exactly. The only thing people can remember is that today, the number of days elapsed since their independence (D) is a perfect square, and moreover it is the largest possible such number one can form as a product of distinct numbers less than or equal to n.
As the years in Remoteland have 1,000,000,007 days, their citizens just need D modulo 1,000,000,007. Note that they are interested in the largest D, not in the largest D modulo 1,000,000,007.
Input
Every test case is described by a single line with an integer n, (1 ≤ n ≤ 10,000,000). The input ends with a line containing 0.
Output
For each test case, output the number of days ago the Republic became independent, modulo 1,000,000,007, one per line.
Sample Input
4 9348095 6297540 0
Sample Output
4 177582252 644064736
Problemsetter: Javier Gómez Serrano
Added by: | David García Soriano |
Date: | 2011-11-26 |
Time limit: | 2.074s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | Southwestern Europe Regional, SWERC 2011 |